Windows Defender is a capable antivirus solution built into Windows itself. Unless you’ve installed a different antivirus program on your Windows 11 or Windows 10 PC, your PC is using it right now.

Compare the best free antivirus tools for Windows 10 in 2026, including real-time malware protection, phishing defense, ...

Here are the basics: Microsoft Defender is the virus protection integrated into Windows by default. If no other antivirus program is installed and activated, Defender protects you against viruses. You ...

When you launch Windows Security on Windows 11, you may see a message You’re using other antivirus providers. This prevents you from activating the Real-time protection of Windows Defender against ...

Microsoft Defender is good now, but I still treat it like a simple lock instead of a full security system. Marshall Gunnell is a Tokyo-based tech journalist and editor with over a decade of experience ...

We explore how Windows Security and Microsoft Defender protect your Windows 11 computer and why you might want to consider an alternative. Dianna Gunn built her first WordPress website in 2008. Since ...

Question: What does Trend Micro’s Internet Security do over Windows Defender? Answer: Cyber threats today aren’t just about viruses as phishing scams, ransomware attacks, and identity theft are all ...